Remove workaround for call+bundle_lock under gas in LowerTlsAddr

lib/Target/X86/X86MCInstLower.cpp

Index: lib/Target/X86/X86MCInstLower.cpp
diff --git a/lib/Target/X86/X86MCInstLower.cpp b/lib/Target/X86/X86MCInstLower.cpp
index 8628eae7598791930ef86c7e0fd5e9227decd999..3ac7ab2982b33ca516c3bc904f48d2f038c6a95a 100644
--- a/lib/Target/X86/X86MCInstLower.cpp
+++ b/lib/Target/X86/X86MCInstLower.cpp
@@ -616,21 +616,13 @@ static void LowerTlsAddr(MCStreamer &OutStreamer,
 
   Triple TT(STI.getTargetTriple());
   // @LOCALMOD-START
-  // There are 2 issues with this code. First, instead of testing the target OS
-  // we should add (upstream) a method to one of the MC classes to test whether
-  // bundle alignment is enabled (currently only the AsmBackend has this, which
-  // can't be used when emitting asm files). That facility should be used here
-  // and in MCAsmStreamer.cpp (this should be done once we are unblocked from
-  // switching to gas by default, so we know exactly where we need it).
-  // Secondly, a bug in gas prevents us from using .bundle_lock with the call
-  // here (https://code.google.com/p/nativeclient/issues/detail?id=4008).
-  // This is actually ok for nacl-clang for now because the old x86 ld linker
-  // has a hack that allows it to rewrite TLS GD sequences even in the presence
-  // of nop padding. For PNaCl (with gold) we do need the sequence to be bundle
-  // locked, so we use !hasRawTextSupport as a proxy for that. Once bug 4008
-  // is fixed we will use the bundle-locks unconditionally with NaCl.
-  bool needsBundleLock = (TT.getOS() == Triple::NaCl &&
-                          !OutStreamer.hasRawTextSupport());
+  // TODO(dschuff): Instead of testing the target OS we should add (upstream) a
+  // method to one of the MC classes to test whether bundle alignment is enabled
+  // (currently only the AsmBackend has this, which can't be used when emitting
+  // asm files). That facility should be used here and in MCAsmStreamer.cpp
+  // (this should be done once we are unblocked from switching to gas by
+  // default, so we know exactly where we need it).
+  const bool needsBundleLock = TT.getOS() == Triple::NaCl;
   if (needsBundleLock)
     OutStreamer.EmitBundleLock(false);
   // @LOCALMOD-END